非线性Lamb波结构疲劳损伤层析成像研究
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摘要
由于现有的基于线性Lamb波的结构损伤监测方法对于疲劳微裂纹等微尺度损伤不敏感,近几年来对非线性Lamb波损伤监测技术的关注越来越多.对非线性Lamb波的基本理论进行了分析,根据具有累加效应的非线性Lamb波传播特点,研究了结构微尺度损伤的非线性Lamb波特征分析和提取方法,结合压电阵列方法,研究基于非线性Lamb波特征参数的结构损伤层析成像方法.在T6061铝合板材料上进行了实验验证,实验结果表明,当结构发生损伤时,非线性特征参数会显著增大,以此为特征可实现对模拟疲劳损伤的成像、定位和评估.
Since the linear Lamb wave is not sensitive to the micro scale damage of fatigue micro cracks,more and more attentions were paid on nonlinear Lamb wave based damage monitoring technology during the past several years.The fundamental theories of nonlinear Lamb wave were analyzed in this paper,including feature analysis and extraction methods based on the character of cumulative nonlinear Lamb wave and nonlinear Lamb wave characteristic parameter based structural fatigue damage tomography combining with piezoelectric array.Experiments on T6061 aluminum plates shows that nonlinear characteristic parameters increased greatly when the structure was fatigue damaged.Imaging results using nonlinear Lamb wave characteristic parameter could locate and evaluate simulated fatigue damages well.
Since the linear Lamb wave is not sensitive to the micro scale damage of fatigue micro cracks,more and more attentions were paid on nonlinear Lamb wave based damage monitoring technology during the past several years.The fundamental theories of nonlinear Lamb wave were analyzed in this paper,including feature analysis and extraction methods based on the character of cumulative nonlinear Lamb wave and nonlinear Lamb wave characteristic parameter based structural fatigue damage tomography combining with piezoelectric array.Experiments on T6061 aluminum plates shows that nonlinear characteristic parameters increased greatly when the structure was fatigue damaged.Imaging results using nonlinear Lamb wave characteristic parameter could locate and evaluate simulated fatigue damages well.
引文
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[11] 周正干,刘斯明.非线性无损检测技术的研究、应用和发展[J].机械工程学报,2011,47(8):2-11 Zhou Zhenggan,Liu Siming.Non-linear non-destructive research,application and development of detection technology[J].Journal of Mechanical Engineering,2011,47(8):2-11
[12] Müller M F,Kim J Y,Qu J M,et al.Characteristics of second harmonic generation of Lamb waves in nonlinear elastic plates[J].Journal of Acoustical Society of America,2010,127(4):2141-2152
[13] Matsuda N,Biwa S.Phase and group velocity matching for cumulative harmonic generation in Lamb waves[J].Journal of Applied Physics,2011,109:094903
[14] Matlack K H,Kim J Y,Jacobs L J,et al.Experimental characterization of efficient second harmonic generation of Lamb wave modes in a nonlinear elastic isotropic plate[J].Journal of Applied Physics,2011,109:014905
[15] 邓明晰,裴俊峰.无损评价固体板材疲劳损伤的非线性超声波兰姆波方法[J].声学学报,2008,33(4):360-369 Deng Mingxi,Pei Junfeng.Nondestructive evaluation of fatigue damage nonlinear ultrasonic Lamb wave method[J].acoustic Sinica,2008,33(4):360-369
[2] Janardhan Padiyar M,Krishnan Balasubramaniam.Lamb-wave-based structural health monitoring technique or inaccessible regions in complex composite structures[J].Structural Control and Health Monitoring,2014,21:817-832
[3] 王强,袁慎芳,陈小惠,等.主动Lamb波合成波阵面损伤成像监测方法[J].仪器仪表学报,2011,32(11):2468-2474 Wang Qiang,Yuan Shenfang,Chen Xiaohui,et al.Active Lamb wave synthesis wavefront and damage imaging monitoring Method[J].Chinese Journal of Scientific Instrument,2011,32(11):2468-2474
[4] Janardhan Padiyar M,Krishnan Balasubramaniam.Lamb-wave-based structural health monitoring technique or inaccessible regions in complex composite structures[J].Structural Control and Health Monitoring,2014,21:817-832
[5] Hong M,Su Z Q,Wang Q,et al.Modeling nonlinearities of ultrasonic waves for fatigue damage characterization:Theory,simulation,and experimental validation[J].Ultrasonics,2013,54(3):770-778
[6] Boon M J G N,Zarouchas Dimitrios,Martinez Marcias,et al.Temperature and load effects on acoustic emission signals for structural health monitoring applications[C].7th European Workshop on Structural Health Monitoring,La Cité,Nantes,France,2014:8-11
[7] Xiang Yanxun,Deng Mingxi,Xuan Fuzhen.Creep damage characterization using nonlinear ultrasonic guided wave method:A mesoscale model[J].Journal of Applied Physics,2014,115,044914
[8] Shui Guoshuang,Wang Yuesheng,Huang Peng,et al.Nonlinear ultrasonic evaluation of the fatigue damage of adhesive joints[J].NDT & E International,2015,70:9-15
[9] Naoki Matsuda,Shiro Biwa.Phase and group velocity matching for cumulative harmonic generation in Lamb waves[J].Journal of Applied Physics,2011,109:094903
[10] Wan Xiang,Tse P W,Xu Guanghua,et al.FEM simulation of nonlinear Lamb waves for detecting a Micro-Crack in a metallic plate[J].Lecture Notes in Mechanical Engineering,2015.DOI:10.1007/978-3-319-09507-3_133
[11] 周正干,刘斯明.非线性无损检测技术的研究、应用和发展[J].机械工程学报,2011,47(8):2-11 Zhou Zhenggan,Liu Siming.Non-linear non-destructive research,application and development of detection technology[J].Journal of Mechanical Engineering,2011,47(8):2-11
[12] Müller M F,Kim J Y,Qu J M,et al.Characteristics of second harmonic generation of Lamb waves in nonlinear elastic plates[J].Journal of Acoustical Society of America,2010,127(4):2141-2152
[13] Matsuda N,Biwa S.Phase and group velocity matching for cumulative harmonic generation in Lamb waves[J].Journal of Applied Physics,2011,109:094903
[14] Matlack K H,Kim J Y,Jacobs L J,et al.Experimental characterization of efficient second harmonic generation of Lamb wave modes in a nonlinear elastic isotropic plate[J].Journal of Applied Physics,2011,109:014905
[15] 邓明晰,裴俊峰.无损评价固体板材疲劳损伤的非线性超声波兰姆波方法[J].声学学报,2008,33(4):360-369 Deng Mingxi,Pei Junfeng.Nondestructive evaluation of fatigue damage nonlinear ultrasonic Lamb wave method[J].acoustic Sinica,2008,33(4):360-369